Repairing vehicle lifting scheme without affecting bridge floor traffic

Abstract

The invention discloses a repairing vehicle lifting scheme without affecting bridge floor traffic. The scheme includes that a winch platform is arranged on a beam or a pier, a lifting point is arranged on an original cart rail, a winch steel wire rope is connected with a repairing vehicle on a barge through a pulley block, and the repairing vehicle is lifted by a chain block to be connected with arail after a cart is lifted by operating the winch to approach to the rail. The lifting scheme solves the problems that in existing scheme, bridge floor traffic is jammed, and a large vehicle possibly impacts a lifting vehicle. All constructions are implemented under a bridge, traffic control of a bridge floor is omitted, an emergency lane only needs to be temporarily closed and used for carryingof devices and temporary on and off duty of constructors, massive traffic jam of the bridge floor cannot be caused, construction under the bridge floor cannot be completely interfered by bridge floor, weather and outside interference is less, examination and approval of traffic police are omitted, construction speed and efficiency is effectively improved, social and economic effects are reduced,and the scheme has high practicability and wide applicability.

Description

technical field [0001] The invention relates to a hoisting scheme, in particular to a hoisting scheme for an overhaul vehicle that does not affect bridge deck traffic. Background technique [0002] In order to facilitate the maintenance of the beam bottom of the long-span steel box girder bridge, the beam bottom inspection vehicle was installed when the bridge was newly built. Most of the maintenance vehicles were heavy and simple due to the design concept at that time, and some maintenance vehicles were even difficult to repair. To meet the needs of inspection, after many years of use, most of the maintenance vehicles are in the state of replacement; at this stage, the replacement of maintenance vehicles is generally carried out on the bridge deck for traffic control, and the replacement method is carried out by using a crane. [0003] The problems of the above method mainly include: [0004] 1) It has a great impact on the traffic on the bridge deck. For the sake of safet...

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Problems solved by technology

[0004] 1) It has a great impact on the traffic on the bridge deck. For the sake of safety during construction, considering the expansion of the outriggers of the crane, it is necessary to close the two traffic lanes and the emergency lane. For bridges with a large traffic flow on the bridge deck, such as Jiangyin Bridge, Su Passing the bridge, etc., the traffic in one lane is basically equivalent to paralysis. It takes one day at the fastest to remove an old trolley and install a new overhaul trolley. The construction of the whole day will cause the length of congestion to reach dozens of roads. If multiple trolleys are replaced continuously, If the congestion lasts for a longer period of time, it will have greater adverse social and economic impacts. With the development of the Internet age, continuous congestion during non-holidays will soon be exposed on the Internet, which will have a very bad impact on the bridge maintenance unit. influences;

[0005] 2) For bridges and expressways with little traffic flow, the speed of large trucks is very fast. Nowadays, the phenomenon of overloading of large truck drivers is very serious, and there is a risk of large trucks breaking into the construction area; once a large truck breaks into the construction area, When hitting the hoisting crane, it will cause the crane to overturn and hit the stay cable or sling. The huge impact force will break the stay cable and sling. The pulling force will sweep the bridge deck, which will cause huge casualties to the bridge deck personnel. Due to the breakage of the stay cables or slings, it will cause huge damage to the main tower or beam body of the bridge. If it is heavy, the beam body will break;

[0006] 3) For the construction unit, the hoisting of the bridge deck is greatly affected by the weather. In rainy weather, the bridge deck is slippery and construction cannot be carried out, which causes delays in construction, and the construction of the bridge deck needs the approval of the traffic police. When the external interference is large and the traffic flow is heavy If the traffic police do not approve it, it will also cause idle work

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